chore: add AGENTS.md for opencode agents

# Agents

This role configures Docker container runtime on the target system.

## Role Analysis

- **Type**: Infrastructure role

- **OS Support**: Debian 12, Debian 13

- **Deployment Method**: Direct (installs Docker Engine)

- **Scope**: Docker installation and configuration

## Key Features

- Installs Docker Engine

- Special handling for LXC containers (disables AppArmor)

## Tasks

1. **apparmor** - Disable AppArmor for LXC (when type == "lxc")

2. **install** - Installs Docker

## Testing

```bash

ansible-lint

molecule test

```